Proceedings. 2003 International Conference on Cyberworlds最新文献_第2页

A Web mining approach for finding expertise in research areas 一种用于查找研究领域专业知识的Web挖掘方法

Proceedings. 2003 International Conference on Cyberworlds Pub Date : 2003-12-03 DOI: 10.1109/CYBER.2003.1253470

T. Quan, S. Hui, A. Fong

引用次数: 10

Believable cyberpeople: a true challenge for the decade 可信的网络人:这十年的真正挑战

Proceedings. 2003 International Conference on Cyberworlds Pub Date : 2003-12-03 DOI: 10.1109/CYBER.2003.1253426

D. Thalmann

引用次数: 0

Algebraic topological modeling for cyberworld design 网络世界设计的代数拓扑建模

Proceedings. 2003 International Conference on Cyberworlds Pub Date : 2003-12-03 DOI: 10.1109/CYBER.2003.1253425

T. Kunii

引用次数: 13

DPBP: a sort-first parallel rendering algorithm for distributed rendering environments DPBP:用于分布式渲染环境的排序优先并行渲染算法

Proceedings. 2003 International Conference on Cyberworlds Pub Date : 2003-12-03 DOI: 10.1109/CYBER.2003.1253457

Huabing Zhu, Kai-Yun Chan, Lizhe Wang, Wentong Cai, S. See

引用次数: 2

An architectural framework for native XML data management 原生XML数据管理的体系结构框架

Proceedings. 2003 International Conference on Cyberworlds Pub Date : 2003-12-03 DOI: 10.1109/CYBER.2003.1253469

Khin-Myo Win, W. Ng, Ee-Peng Lim

{"title":"An architectural framework for native XML data management","authors":"Khin-Myo Win, W. Ng, Ee-Peng Lim","doi":"10.1109/CYBER.2003.1253469","DOIUrl":"https://doi.org/10.1109/CYBER.2003.1253469","url":null,"abstract":"With rapid increase of semistructured data over the Web, XML becomes popular to represent such data and emerges as a de facto standard for information exchange among e-business applications. Since XML data are widely distributed, new native XML database systems, which are specifically tailored for managing such data, become necessary. Unlike data in conventional databases, XML has special characteristics and constraints, thus, well-defined architectural framework for conventional databases are not completely relevant to be adopted in native databases. Current state-of-the-art native databases employed their own architectures in their database designs, as a result, they are inconsistent and there is still lack of a common architectural framework that can be referenced by future XML database designers. We aim to fulfill this requirement. In this paper, we propose a general and an extended architectural frame-works that are derived from our practical experience on designing an efficient storage for XML data while preserving desirable features and possible constraints. The validation demonstrates that the proposed framework covers the architectures employed in current state-of-the-art native database systems.","PeriodicalId":130458,"journal":{"name":"Proceedings. 2003 International Conference on Cyberworlds","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125433532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Reducing optical crosstalk in affordable systems of virtual environment 在可负担的虚拟环境系统中减少光串扰

Proceedings. 2003 International Conference on Cyberworlds Pub Date : 2003-12-03 DOI: 10.1109/CYBER.2003.1253441

S. Klimenko, I. Nikitin, L. Nikitina

{"title":"Reducing optical crosstalk in affordable systems of virtual environment","authors":"S. Klimenko, I. Nikitin, L. Nikitina","doi":"10.1109/CYBER.2003.1253441","DOIUrl":"https://doi.org/10.1109/CYBER.2003.1253441","url":null,"abstract":"We have implemented a scheme for elimination of depolarization artefacts in passive stereo-projection systems. These problems appear due to non-perfectness of stereo-projection equipment: depolarization of the light due to reflection from the screen or due to the passage through the screen; non-ideality of polarizing filters; mixing of left- and right-eye images in a change of relative orientation of the filters. These effects lead to strong violations in stereo-perception (known as \"ghosts\"). They can be eliminated by software methods, using linear filtering of the image before its projection to the screen, based on the formula L' = L -/spl alpha/R, R' = R -/spl alpha/L , where L, R are images, destined for the left and right eye respectively, /spl alpha/ is constant, defining intensity of the ghosts. This receipt, in theory leading to exact compensation of the ghosts, in practice possesses certain limitations, which allow not complete elimination but only strong suppression of the ghosts, at very careful calibration of the system. We have implemented this algorithm in VE system Avango by means of texture mappings. All necessary operations are performed by the graphics board, thus providing the real-time rendering rate. The described method considerably improves stability of stereo-perception, making high-quality performances of virtual environment possible on affordable equipment.","PeriodicalId":130458,"journal":{"name":"Proceedings. 2003 International Conference on Cyberworlds","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126592256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Augmenting the world with interactive virtual studio 用交互式虚拟工作室增强世界

Proceedings. 2003 International Conference on Cyberworlds Pub Date : 2003-12-03 DOI: 10.1109/CYBER.2003.1253462

Li Li, S. H. Soon, Widya Andyardja Weliamto

{"title":"Augmenting the world with interactive virtual studio","authors":"Li Li, S. H. Soon, Widya Andyardja Weliamto","doi":"10.1109/CYBER.2003.1253462","DOIUrl":"https://doi.org/10.1109/CYBER.2003.1253462","url":null,"abstract":"In this paper, a system named IVS (Interactive Virtual Studio), which integrates low-level (feature extraction and ordering), mid-level (camera parameters estimation and evaluation), high-level (object recognition and reconstruction), and graphics techniques, is presented. The purpose of IVS is to integrate computer generated animation with real image sequence seamlessly. With minimum human intervention, IVS is an off-line postprocessing system that operates on a real world sequence in which a known object is tracked. The camera pose in each frame is recovered from which the camera trajectory is reconstructed. Firstly, object features are extracted from the environment and correspondence between the extracted shape and a shape from a database is solved by an SVD (Singular Value Decomposition) based technique. Secondly, SFSM (Structure from Simulated Motion) is used for object recognition and the information is used for reconstruction of the 3D object contained in the image. An evaluation mechanism is introduced to provide feedback and reduce the registration error. In the last stage of the processing, virtual graphics objects are imported to interact with the real image sequence. While the concept of developing such a system is not new, the various novel techniques we incorporated into IVS make it different.","PeriodicalId":130458,"journal":{"name":"Proceedings. 2003 International Conference on Cyberworlds","volume":"179 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121262624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adaptation of facial and body animation for MPEG-based architectures 基于mpeg架构的面部和身体动画的适配

Proceedings. 2003 International Conference on Cyberworlds Pub Date : 2003-12-03 DOI: 10.1109/CYBER.2003.1253458

T. D. Giacomo, C. Joslin, S. Garchery, N. Magnenat-Thalmann

{"title":"Adaptation of facial and body animation for MPEG-based architectures","authors":"T. D. Giacomo, C. Joslin, S. Garchery, N. Magnenat-Thalmann","doi":"10.1109/CYBER.2003.1253458","DOIUrl":"https://doi.org/10.1109/CYBER.2003.1253458","url":null,"abstract":"While level of detail (LoD) methods for the representation of 3D models are efficient and established tools to manage the trade-off between speed and quality of the rendering, LoD for animation has not yet been intensively studied by the community, and especially virtual humans animation has not been focused in the past. Animation, a major step for immersive and credible virtual environments, involves heavy computations and as such, it needs a control on its complexity to be embedded into real-time systems. Today, it becomes even more critical and necessary to provide such a control with the emergence of powerful new mobile devices and their increasing use for cyberworlds. With the help of suitable middleware solutions, executables are becoming more and more multi-platform. However, the adaptation of content, for various network and terminal capabilities - as well as for different user preferences, is still a key feature that needs to be investigated. It would ensure the adoption of the \"Multiple Target Devices Single Content\" concept for virtual environments, and would in theory provide the possibility of such virtual worlds in any possible condition without the need for multiple content. It is on this issue that we focus, with a particular emphasis on 3D objects and animation. This paper presents some methods for adapting a virtual human's representation and animation stream, both for their skeleton-based body animation and their deformation based facial animation, we also discuss practical details for the integration of our methods into MPEG-21 and MPEG-4 architectures.","PeriodicalId":130458,"journal":{"name":"Proceedings. 2003 International Conference on Cyberworlds","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114162200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Efficient Web log mining for product development 高效的Web日志挖掘，用于产品开发

Proceedings. 2003 International Conference on Cyberworlds Pub Date : 2003-12-03 DOI: 10.1109/CYBER.2003.1253468

Y. Woon, W. Ng, Xiang Li, W. Lu

引用次数: 18

Embodied tour guide in an interactive virtual art gallery 互动式虚拟美术馆的具身导游

Proceedings. 2003 International Conference on Cyberworlds Pub Date : 2003-12-03 DOI: 10.1109/CYBER.2003.1253486

Xiang Yuan, Yam San Chee

{"title":"Embodied tour guide in an interactive virtual art gallery","authors":"Xiang Yuan, Yam San Chee","doi":"10.1109/CYBER.2003.1253486","DOIUrl":"https://doi.org/10.1109/CYBER.2003.1253486","url":null,"abstract":"The technology of embodied conversational agents in virtual worlds provides an attractive way to achieve natural and realistic human-computer interaction if the interaction designs is handled sensitively. In view of this, we aim at building an embodied tour guide that is able to engage conversationally with system users about gallery exhibits, and capable of behaving according to social norms in terms of gesture and facial expression. The research has focused on the attributes of agent autonomy and believability, not truthfulness. To achieve agent autonomy, we present a three-layered architectural design to ensure appropriate coupling between agent's perception and action, and to hide the internal mechanism from users. We then work towards agent believability: we utilize the notion of schema to support structured and coherent verbal behaviors; careful attention has also been paid to the design of non-verbal agent interactions that help to establish social facts within the virtual world. Our discussion focuses on how reasoning, planning and generation of the verbal and non-verbal behaviors are performed using the schema-based framework. Finally the agent-user interactions are illustrated with a case study.","PeriodicalId":130458,"journal":{"name":"Proceedings. 2003 International Conference on Cyberworlds","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133496007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1